Save-all, paper making machine, etc.



Aug. 2 5, 1931. J. A. WHITE 1,820,854

SAVE-ALL, PAPER MAKING MACHINE, ETC

Filed Oct. 13, 1930 2 Sheets-Sheet l Aug. 25, 1931. -J. A. WHITE 1,820,854

SAVE-ALL, PAPER MAKING MACHINE, ETC

Filed Oct. 13, 1930 2 Sheets-Sheet 2 nil:

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ime fl 55 W %W 1W IIIIIIIIIJI Patented Aug. 25, 1 931 {UNITED} STATES PATENT omen;

JOSEPH; A. WHITE, or mnLnosn PARK; PENN YLVANIA, Assfenoa T6 was noon at WHITE COMPANY, or PHILADELPHIA, rmmsYLvAmA, A'CORPORA'IION or 3mm- .SYLVANIA Application ma October 13, 1930. Serial in. 488,415.

ments in cylinder machines, in which pulp carried by liquid adheres to the surface of a perforated cylinder, the water passmg I 5 throu h the cylinder with some fine stock,

and t e water being discharged from the cylinder.

The invention can be used as a save-all,

.which collects the water from different paper making machines, the pulp being discharged at one end of the machine, or It may betaken off with a couch roll, as infa wet paper making machine, or a decker, the

water passing from the cylinderthrough an outlet.

The object of my invention is to improve the construction o this type of machine by causing the liquid to pass through the perforated cylinder twice, first inwardly, causing .the paper stock to adhere to'the outer surface of the cylinder; then through the cyl inder face from the inside to an outlet.

A further object of the invention is to so construct a machine of this type that the perforations of the cylinder will be comparatively clear of obstructions at all times. The invention relates also to details of construction described hereinafter. In the accompanying drawings:

Figure l is a plan view of a save-all, illustrating my invention; f Fig. 2 is a transverse sectional view on the line 22, Fig. 1;

Fig. 3 is a longitudinal sectional View on the line 3-3, Fig. 1;

Fig. 4 is a sectional view illustrating a modification of the invention; and. Fig. 5 is a view illustrating my improvement as "applied to a cylinder paper making 9 machine.

Referring now to Figs. 1, 2 and 3 of the drawings; 1 is a vat. Located in the vat is .a-cylinder'2, made as shown in Fig. 3 -having a perforated periphery, preferably in the form of a screen of a givenmesh supported b a series of spiders 3-30, the end spiders orming the open endsof the cylin-- der. The end walls 4 and side walls of the vat extend the full height thereof, .while the end wall 5 terminates a short distance by dotted lines 11a, Fig. 2. .over the wier the full width of the vat and through the cylinder. Extending from the bottom of the vat at about thecenter of the vat, to the top of the end wall 5, is an inclined bottom section 6, curvedin the present instance and forming with the cylinder, a channel '7, through which the water and stock flow. The channel in this instance is tapered as shown in Fig. 2 but may be made of the same area throughout as shown in Fiin.

inlet pipe 8, opens into the vat under ahori'zontal partition 9, an outlet 10 communicates with the vat above the partition as shown in Fig. 2. The partition has a wier 11, and this wier may be adjustable or may have an adjustable section, as shown The water passes keeps the water level inside of the cylinder exactly the same from end to end, which is a decided advantage when makin paper or paper board. Secured, to the e ge of the partition is a flexible strip 12, which prevents the' water passing from the inlet to of driving the cylinder may be used without departing from the essential feature of the inventio Communicating with the inlet is an overflow pipe 18, having an outlet 19. Each end spider 3 of the cylinder 2 has a hub 20, arms 21 and a ring 22. On the ring is an anhular rib 24, and the supports 25 for the screen extends. from one end spider to the other end spider, as shown in Fig.3. The

intermediate spiders 3a are made in substantially the same manner as the end spiders and form the intermediate supports for the screen.

On the side wall of the vat are segmental ribs 26. Secured to the ribs are strips of below a longitudinal center line taken felt 27, which rest upon the end rings of the cylinders as shown in Fig. 3, and prevent water and stock entering the cylinder without firsltnpassing through the screen.

The et of a rotary pump 28 communicates through a. pipe '29 with the interior "of the cylinder 2 and the outlet of the pump is connected to a pipe 30, which discharges into the vat at the back of the cylinder 2, as shown in Fig. 2, so as to draw any stock that may collect in the interior of the cylinder away from the cylinder and discharge it into the vat. The pipe 30 may be attached to a spray pipe if'desir'ed, as shown in Fig. 4.

At thedis'charge end of the vat is a screw conveyor 31, mounted on a power driven shaft 32, having a sprocket wheel 33, which is driven through a chain from a sprocket wheel 34 on the shaft 13 of the cylinder. This screw conveyor is made in two sections, one sectionbeing a-right hand screw and the other a left hand screw, so as to feed the stock as it flows from the tapered channel ,5 to' a central discharge opening 35,'and into a receptacle 36-, which is connected to a discharge pipe 37. The bottom 35a of the discharge opening 35 acts as a wier over which the stock flows. The screw conveyor not only acts to convey the material to a central point in the machine, but also acts to squeeze the stock as it is conveyed, so as to remove as much water as possible from the stock before it is discharged, the stock passing over the wier in a comparatively thick condition;

The water, after passing through the perforations in the cylinder from the channel '7, again flows through the perforationsin the cylinder at the point X, but in the opposite direction, so that the water is re-filtered, reclaiming fiber or clay which may have passed through the cylinder the first time. This is returned to the vat by the pump and its connection, and this operation keeps the cylinder absolutely clean both on the inside and the outside.

The machine above described, requires no special washing when changing colors, etc., as it is self-cleaning.

Fig. 4 illustrates a modification, in which a ribbed roll 31a is substituted for the screw conveyor, the rib 31b of this roll passing over a curved screen plate 38 squeezing a certain amount of water from the stock, the water passing through the openings in the plate'38, returning to the interior of the vat.

In Fig. 2 I have shown the invention as applied to a save all, while in Fig. 5 I have shown the invention as applied to a cylinder paper making machine. The vat, screen,

and the partitions in-the vat are the same as in Fig. 2-. The spray pipe is located on the opposite side of the cylinder, as at 39, andhas a roll 40, which is located above the cylinder and. passing around the roll is an endless apron 41 of the usual type.

I claim 1. The combination in a cylinder machine for paper making, of a vat; a cylinder in the outlet.

2. The combination in a cylinder machine for paper making, of a vat a rotating cylinder in the vat having peripheral perforations; and an inlet and an outlet for the vat, a portion of the bottom section of the inlet being so related to the cylinder that a tapered channel is formed where the water is allowed to pass through the perforations into the cylinder, the outlet communicating with another portion of the perforated'periphery of the cylinder, so that the water in the cylinder .will pass out of the cylinder through perforations to the outlet.

-3. The combination in a cylinder machine for paper making, of a vat; a rotating cylinder in the vat having peripheral perforations; an inlet and an outlet for the vat, a portion of the bottom section of the inlet being so related to the cylinder that a tapered channel is formed where the water is allowed to pass through the perforations into the cylinder, the outlet communicating with another portion of the perforated periphery of the cylinder, so that the Water in the cylinder will pass out of the cylinder through perforations to the outlet; a pipe communicating with the interior of the cylinder; a pump connected'to the pipe; and

a pipe connected to the-discharge end of .the pump and opening into the vat outside of the cylinder.

4. The combination in a cylinder machine for paper making, of a vat having a horizontal partition; an inlet pipe communicating with the space under the partition; an outlet pipe communicating with the space above thepartition; a rotating cylinder having peripheral perforations and mounted in the vat and communicating with both the outlet and the inlet, so that water separated from the stock will pass through the perforations into the cylinder and the water within the cylinder will pass -again through a section of the perforated cyflinder in the opposite direction to the outlet; and means forconveying the stock away from the vat.

5. The combination in a cylinder machine for paper making, of a vat; a cylinder in the vet having a perforated periphery; means for rotating the cylinder in the vat; an in- I 'so that water will pass a second time through the perforations in the cylinder to the outlet; a right and left hand screw-conveyor extending the full length of the cylinder at the discharge end thereof; and a central outi let for the stock.

6. The combination in a cylinder machine for paper making, of a vat; a cylinder rotated in the vat, said cylinder having a perforated periphery and open at each end; means for closing the space between the ends of the cylinder and the sides of the vat; a substantially horizontal partition; an inlet pipe communicating with the space under the partition; an outlet pipe communicating with the space above the partition; means between the partition and the cylinder to prevent water flowing from the inlet to the outletwithout passing through the cylinder; and a pump, the inlet pipe of the pump communicating with the interior of the cylinder, and the discharge pipe of the pump discharging into the'vat.

7. The combination in a cylinder ma chine for paper making, of a Vat; a rotating cylinder mounted in the vat and having a perforated periphery extending substantially the full width of the vat; a partition in the vat separating the inlet from the outlet; an inclined bottom section forming with the cylinder a channel of reduced area so that the water will pass through the perfo-' rations in the vat while the pump will remain on the periphery of the vat, the outlet communicating with a portion of the periphery of the vat so that the water will again pass through the perforations from the interior of thecyilinder to the outlet; and means for conveying the pulp away from the machine.

JOSEPH A. WHITE. 

